Depression on top of having to be"the rock" and take care of everything and everyone is rough. You deserve to have support for yourself and you don't sound like a whiny teenager to me. You just have so many difficult things going on.
I certainly hope the new medication helps. I was on antidepressants and migraine meds that had terrible side effects so I understand how that can be. I was on Topamax for migraines and that stuff made me so nauseated. The one bright side was that I lost weight. I'm still fat and could use to lose more weight.
Post here. There are lots of people here who will be understanding and supportive.
